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| author | Aaron Sawdey <acsawdey@linux.ibm.com> | 2020-10-07 18:27:45 -0500 |
|---|---|---|
| committer | Aaron Sawdey <acsawdey@linux.ibm.com> | 2021-02-25 21:27:14 -0600 |
| commit | b8d85f569a6dd44cb9561c95e5f628bd6cd531a5 (patch) | |
| tree | 328c0460daf20e0f73d88fc7e96cf2b6099b527b /gcc/config.gcc | |
| parent | 9967bbfceddce755b18bdbecc6d0c56e994a05cc (diff) | |
| download | gcc-b8d85f569a6dd44cb9561c95e5f628bd6cd531a5.zip gcc-b8d85f569a6dd44cb9561c95e5f628bd6cd531a5.tar.gz gcc-b8d85f569a6dd44cb9561c95e5f628bd6cd531a5.tar.bz2 | |
Optimize pcrel access of globals
This patch implements a RTL pass that looks for pc-relative loads of the
address of an external variable using the PCREL_GOT relocation and a
single load or store that uses that external address.
Produced by a cast of thousands:
* Michael Meissner
* Peter Bergner
* Bill Schmidt
* Alan Modra
* Segher Boessenkool
* Aaron Sawdey
gcc/ChangeLog:
* config.gcc: Add rs6000-pcrel-opt.o.
* config/rs6000/rs6000-pcrel-opt.c: New file.
* config/rs6000/pcrel-opt.md: New file.
* config/rs6000/predicates.md: Add d_form_memory predicate.
* config/rs6000/rs6000-cpus.def: Add OPTION_MASK_PCREL_OPT.
* config/rs6000/rs6000-passes.def: Add pass_pcrel_opt.
* config/rs6000/rs6000-protos.h: Add reg_to_non_prefixed(),
pcrel_opt_valid_mem_p(), output_pcrel_opt_reloc(),
and make_pass_pcrel_opt().
* config/rs6000/rs6000.c (reg_to_non_prefixed): Make global.
(rs6000_option_override_internal): Add pcrel-opt.
(rs6000_delegitimize_address): Support pcrel-opt.
(rs6000_opt_masks): Add pcrel-opt.
(pcrel_opt_valid_mem_p): New function.
(reg_to_non_prefixed): Make global.
(rs6000_asm_output_opcode): Reset prepend_p_to_next_insn.
(output_pcrel_opt_reloc): New function.
* config/rs6000/rs6000.md (loads_extern_addr): New attr.
(pcrel_extern_addr): Set loads_extern_addr.
Add include for pcrel-opt.md.
* config/rs6000/rs6000.opt: Add -mpcrel-opt.
* config/rs6000/t-rs6000: Add rules for pcrel-opt.c and
pcrel-opt.md.
gcc/testsuite/ChangeLog:
* gcc.target/powerpc/pcrel-opt-inc-di.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-df.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-di.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-hi.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-qi.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-sf.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-si.c: New test.
* gcc.target/powerpc/pcrel-opt-ld-vector.c: New test.
* gcc.target/powerpc/pcrel-opt-st-df.c: New test.
* gcc.target/powerpc/pcrel-opt-st-di.c: New test.
* gcc.target/powerpc/pcrel-opt-st-hi.c: New test.
* gcc.target/powerpc/pcrel-opt-st-qi.c: New test.
* gcc.target/powerpc/pcrel-opt-st-sf.c: New test.
* gcc.target/powerpc/pcrel-opt-st-si.c: New test.
* gcc.target/powerpc/pcrel-opt-st-vector.c: New test.
Diffstat (limited to 'gcc/config.gcc')
| -rw-r--r-- | gcc/config.gcc | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/config.gcc b/gcc/config.gcc index 17fea83..c885300 100644 --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -509,7 +509,8 @@ or1k*-*-*) ;; powerpc*-*-*) cpu_type=rs6000 - extra_objs="rs6000-string.o rs6000-p8swap.o rs6000-logue.o rs6000-call.o" + extra_objs="rs6000-string.o rs6000-p8swap.o rs6000-logue.o" + extra_objs="${extra_objs} rs6000-call.o rs6000-pcrel-opt.o" extra_headers="ppc-asm.h altivec.h htmintrin.h htmxlintrin.h" extra_headers="${extra_headers} bmi2intrin.h bmiintrin.h" extra_headers="${extra_headers} xmmintrin.h mm_malloc.h emmintrin.h" @@ -524,6 +525,7 @@ powerpc*-*-*) esac extra_options="${extra_options} g.opt fused-madd.opt rs6000/rs6000-tables.opt" target_gtfiles="$target_gtfiles \$(srcdir)/config/rs6000/rs6000-logue.c \$(srcdir)/config/rs6000/rs6000-call.c" + target_gtfiles="$target_gtfiles \$(srcdir)/config/rs6000/rs6000-pcrel-opt.c" ;; pru-*-*) cpu_type=pru @@ -535,8 +537,10 @@ riscv*) ;; rs6000*-*-*) extra_options="${extra_options} g.opt fused-madd.opt rs6000/rs6000-tables.opt" - extra_objs="rs6000-string.o rs6000-p8swap.o rs6000-logue.o rs6000-call.o" + extra_objs="rs6000-string.o rs6000-p8swap.o rs6000-logue.o" + extra_objs="${extra_objs} rs6000-call.o rs6000-pcrel-opt.o" target_gtfiles="$target_gtfiles \$(srcdir)/config/rs6000/rs6000-logue.c \$(srcdir)/config/rs6000/rs6000-call.c" + target_gtfiles="$target_gtfiles \$(srcdir)/config/rs6000/rs6000-pcrel-opt.c" ;; sparc*-*-*) cpu_type=sparc |